/* ── Reset & Base ─────────────────────────────────── */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg: #0a0a0f;
  --surface: #13131a;
  --surface-2: #1a1a24;
  --border: #2a2a3a;
  --text: #e8e8f0;
  --text-dim: #8888a0;
  --accent: #f0c040;
  --accent-glow: rgba(240, 192, 64, 0.15);
  --accent-2: #e07830;
  --radius: 16px;
  --font-body: 'Space Grotesk', system-ui, sans-serif;
  --font-display: 'Syne', 'Space Grotesk', system-ui, sans-serif;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  position: relative;
}

/* ── Film Grain Overlay ──────────────────────────── */
.grain {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1000;
  opacity: 0.03;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)'/%3E%3C/svg%3E");
}

/* ── App Layout ──────────────────────────────────── */
.app {
  max-width: 640px;
  margin: 0 auto;
  padding: 48px 24px 32px;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* ── Background Glow ─────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

/* ── Header ──────────────────────────────────────── */
.header {
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  z-index: 1;
}

.logo {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  margin-bottom: 12px;
}

.logo-icon {
  font-size: 28px;
  line-height: 1;
}

.logo-text {
  font-family: var(--font-display);
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 6px;
  color: var(--accent);
  text-transform: uppercase;
}

.subtitle {
  color: var(--text-dim);
  font-size: 15px;
  font-weight: 400;
  letter-spacing: 0.3px;
}

/* ── Card ────────────────────────────────────────── */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
  z-index: 1;
}

.card {
  width: 100%;
  perspective: 1000px;
  margin-bottom: 32px;
}

.card-inner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 48px 32px;
  min-height: 220px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1),
              box-shadow 0.5s ease,
              border-color 0.5s ease;
  position: relative;
  overflow: hidden;
}

.card-inner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(240, 192, 64, 0.03) 0%, transparent 50%);
  pointer-events: none;
}

.card-inner.picked {
  border-color: rgba(240, 192, 64, 0.3);
  box-shadow: 0 0 60px rgba(240, 192, 64, 0.08),
              0 20px 40px rgba(0, 0, 0, 0.3);
}

.card-inner.shuffle {
  animation: shuffle 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes shuffle {
  0%   { transform: scale(1) rotateY(0deg); }
  30%  { transform: scale(0.95) rotateY(8deg); }
  60%  { transform: scale(0.95) rotateY(-8deg); }
  100% { transform: scale(1) rotateY(0deg); }
}

/* ── Placeholder State ───────────────────────────── */
.card-placeholder {
  text-align: center;
}

.placeholder-icon {
  font-family: var(--font-display);
  font-size: 64px;
  font-weight: 800;
  color: var(--border);
  line-height: 1;
  margin-bottom: 16px;
  user-select: none;
}

.card-placeholder p {
  color: var(--text-dim);
  font-size: 15px;
}

/* ── Result State ────────────────────────────────── */
.card-result {
  text-align: center;
  width: 100%;
}

.result-label {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 16px;
  opacity: 0;
  transform: translateY(8px);
  animation: fadeUp 0.4s ease 0.2s forwards;
}

.result-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 6vw, 42px);
  font-weight: 800;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 16px;
  opacity: 0;
  transform: translateY(12px);
  animation: fadeUp 0.5s ease 0.35s forwards;
}

.result-number {
  font-size: 12px;
  color: var(--text-dim);
  letter-spacing: 2px;
  opacity: 0;
  transform: translateY(8px);
  animation: fadeUp 0.4s ease 0.5s forwards;
}

@keyframes fadeUp {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ── Hidden ──────────────────────────────────────── */
.hidden {
  display: none !important;
}

/* ── Button ──────────────────────────────────────── */
.controls {
  margin-bottom: 40px;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 600;
  border: none;
  cursor: pointer;
  border-radius: 100px;
  transition: all 0.25s ease;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--accent);
  color: var(--bg);
  padding: 16px 36px;
  box-shadow: 0 0 30px rgba(240, 192, 64, 0.2),
              0 4px 12px rgba(0, 0, 0, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 50px rgba(240, 192, 64, 0.3),
              0 8px 20px rgba(0, 0, 0, 0.4);
}

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-icon {
  font-size: 18px;
  transition: transform 0.25s ease;
}

.btn:hover .btn-icon {
  transform: translateX(3px);
}

/* ── History ─────────────────────────────────────── */
.history {
  width: 100%;
}

.history-title {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-dim);
  margin-bottom: 16px;
  text-align: center;
}

.history-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  font-size: 14px;
  color: var(--text-dim);
  opacity: 0;
  transform: translateY(8px);
  animation: fadeUp 0.3s ease forwards;
}

.history-item .history-num {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 1px;
  flex-shrink: 0;
  width: 24px;
}

.history-item .history-name {
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* ── Footer ──────────────────────────────────────── */
.footer {
  text-align: center;
  padding-top: 32px;
  margin-top: auto;
  position: relative;
  z-index: 1;
}

.footer p {
  font-size: 12px;
  color: var(--text-dim);
  opacity: 0.6;
  letter-spacing: 0.3px;
}

/* ── Header top row ──────────────────────────────── */
.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.header-top .logo {
  margin-bottom: 0;
}

/* ── Auth bar ────────────────────────────────────── */
.auth-bar {
  display: flex;
  align-items: center;
  gap: 8px;
}

.auth-user {
  font-size: 12px;
  color: var(--text-dim);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.auth-btn {
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 14px;
  border-radius: 100px;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  cursor: pointer;
  transition: background 0.2s, color 0.2s;
}

.auth-btn:hover {
  background: var(--accent);
  color: var(--bg);
}

.auth-btn-ghost {
  border-color: var(--border);
  color: var(--text-dim);
}

.auth-btn-ghost:hover {
  background: var(--surface-2);
  color: var(--text);
}

/* ── Watched button ──────────────────────────────── */
.watched-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-top: 20px;
  font-family: var(--font-body);
  font-size: 13px;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-dim);
  cursor: pointer;
  transition: all 0.2s;
  opacity: 0;
  animation: fadeUp 0.3s ease 0.6s forwards;
}

.watched-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.watched-btn-active {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-glow);
}

.watched-btn-icon {
  font-size: 14px;
}

/* ── Watched filter toggle ───────────────────────── */
.watched-filter {
  margin-top: 16px;
}

.toggle-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  font-size: 13px;
  color: var(--text-dim);
  user-select: none;
}

.toggle-label input {
  display: none;
}

.toggle-track {
  width: 36px;
  height: 20px;
  border-radius: 100px;
  background: var(--border);
  position: relative;
  transition: background 0.2s;
  flex-shrink: 0;
}

.toggle-track::after {
  content: '';
  position: absolute;
  top: 3px;
  left: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--text-dim);
  transition: transform 0.2s, background 0.2s;
}

.toggle-label input:checked + .toggle-track {
  background: var(--accent);
}

.toggle-label input:checked + .toggle-track::after {
  transform: translateX(16px);
  background: var(--bg);
}

/* ── Modal ───────────────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  width: 100%;
  max-width: 400px;
  position: relative;
  animation: fadeUp 0.25s ease;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: 6px;
  transition: color 0.2s;
}

.modal-close:hover {
  color: var(--text);
}

.modal-tabs {
  display: flex;
  gap: 4px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 0;
}

.modal-tab {
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 14px;
  font-weight: 600;
  color: var(--text-dim);
  cursor: pointer;
  padding: 8px 16px;
  border-bottom: 2px solid transparent;
  margin-bottom: -1px;
  transition: color 0.2s, border-color 0.2s;
}

.modal-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.modal-title {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 20px;
}

.modal-hint {
  font-size: 14px;
  color: var(--text-dim);
  margin-bottom: 20px;
  line-height: 1.5;
}

.modal-hint strong {
  color: var(--text);
}

.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.form-group input {
  width: 100%;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 12px 14px;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text);
  outline: none;
  transition: border-color 0.2s;
}

.form-group input:focus {
  border-color: var(--accent);
}

.form-group input::placeholder {
  color: var(--text-dim);
  opacity: 0.5;
}

.form-error {
  font-size: 13px;
  color: #e05050;
  margin-bottom: 12px;
}

.btn-full {
  width: 100%;
  justify-content: center;
  margin-top: 4px;
}

.btn-link {
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: 13px;
  color: var(--text-dim);
  cursor: pointer;
  text-decoration: underline;
  margin-top: 12px;
  display: block;
  text-align: center;
  transition: color 0.2s;
}

.btn-link:hover {
  color: var(--text);
}

/* ── Browser Overlay ─────────────────────────────── */
.browser-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: flex;
  align-items: flex-end;
  justify-content: center;
}

.browser-panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius) var(--radius) 0 0;
  width: 100%;
  max-width: 640px;
  height: 90vh;
  display: flex;
  flex-direction: column;
  animation: slideUp 0.3s cubic-bezier(0.34, 1.4, 0.64, 1);
  overflow: hidden;
}

@keyframes slideUp {
  from { transform: translateY(40px); opacity: 0; }
  to   { transform: translateY(0);    opacity: 1; }
}

.browser-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 20px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.browser-title {
  font-family: var(--font-display);
  font-size: 18px;
  font-weight: 800;
  color: var(--text);
  line-height: 1;
}

.browser-watched-count {
  font-size: 12px;
  color: var(--accent);
  font-weight: 600;
  letter-spacing: 0.3px;
  display: block;
  margin-top: 4px;
}

.browser-header-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.browser-sort-group {
  display: flex;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 3px;
  gap: 2px;
}

.browser-sort-btn {
  font-family: var(--font-body);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-dim);
  background: none;
  border: none;
  cursor: pointer;
  padding: 5px 12px;
  border-radius: 100px;
  transition: background 0.2s, color 0.2s;
  white-space: nowrap;
}

.browser-sort-btn.active {
  background: var(--accent);
  color: var(--bg);
}

.browser-close {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 16px;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 6px;
  transition: color 0.2s;
  line-height: 1;
}

.browser-close:hover {
  color: var(--text);
}

.browser-search-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  position: relative;
}

.browser-search-icon {
  font-size: 16px;
  flex-shrink: 0;
  opacity: 0.5;
}

.browser-search {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  font-family: var(--font-body);
  font-size: 15px;
  color: var(--text);
  min-width: 0;
}

.browser-search::placeholder {
  color: var(--text-dim);
  opacity: 0.5;
}

/* hide browser default clear button in webkit */
.browser-search::-webkit-search-cancel-button { display: none; }

.browser-search-clear {
  background: none;
  border: none;
  color: var(--text-dim);
  font-size: 12px;
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  flex-shrink: 0;
  transition: color 0.2s;
}

.browser-search-clear:hover { color: var(--text); }

.browser-results-count {
  font-size: 12px;
  color: var(--text-dim);
  padding: 6px 20px 0;
  flex-shrink: 0;
}

.browser-list {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
}

.browser-list::-webkit-scrollbar { width: 4px; }
.browser-list::-webkit-scrollbar-track { background: transparent; }
.browser-list::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }

.browser-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 16px;
  cursor: pointer;
  transition: background 0.15s;
  border-bottom: 1px solid var(--border);
}

.browser-item:last-child { border-bottom: none; }

.browser-item:hover { background: var(--surface-2); }

.browser-item-check {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: 2px solid var(--border);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  transition: border-color 0.2s, background 0.2s;
  color: transparent;
}

.browser-item.watched .browser-item-check {
  border-color: var(--accent);
  background: var(--accent-glow);
  color: var(--accent);
}

.browser-item-index {
  font-size: 11px;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.5px;
  width: 36px;
  flex-shrink: 0;
  transition: opacity 0.2s;
}

.browser-item.watched .browser-item-index { opacity: 0.4; }

.browser-item-title {
  flex: 1;
  font-size: 14px;
  color: var(--text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  transition: color 0.2s;
}

.browser-item.watched .browser-item-title { color: var(--text-dim); }

.browser-no-results {
  padding: 48px 24px;
  text-align: center;
  color: var(--text-dim);
  font-size: 14px;
}

/* ── Responsive ──────────────────────────────────── */
@media (max-width: 480px) {
  .app {
    padding: 32px 16px 24px;
  }

  .card-inner {
    padding: 36px 24px;
    min-height: 180px;
  }

  .btn-primary {
    padding: 14px 28px;
    font-size: 15px;
  }

  .auth-user {
    display: none;
  }
}